MathPHP\Functions\PolynomialTest::testGetVariable PHP 메소드

    public function testGetVariable(array $args, string $expected)
    {
        $coefficients = $args[0];
        $variable = $args[1] ?? "x";
        $polynomial = new Polynomial($coefficients, $variable);
        $result = $polynomial->getVariable();
        $this->assertEquals($expected, $result);
    }